DN40截止阀的加工工艺规程设计封面.doc
学 号 分 类 号 江苏食品职业技术学院 毕业设计（论文）题 目 DN40截止阀的加工工艺规程设计 院(系)名 称机电工程系专 业 名 称 数控技术学 生 姓 名孔钰楠指 导 教 师刘碧俊二一 年 五 月 十五 日DN40截止阀的加工工艺规程设计摘要: 阀门作为一个流体输送的组件，随着国民经济，特别是国家煤化工产业和装备制造业的发展，对阀门提出新的要求:高温、高压、耐磨、耐腐蚀、耐冲刷、抗热循坏和零泄漏。这样，阀门将获得快速发展。截止阀是利用阀瓣沿着瓣座通道的中心线移动，来控制管路启闭的一种闭路阀，可用于大部分介质流程系统中。目前，已广泛用于石化、电力、冶金、城建、化工等部门。本文对DN40截止阀的发展、用途、结构和特点进行了概述，增强对该阀门的了解。根据对阀门的分析，确定其生产类型，毛坯种类和制造方法，拟定加工工艺路线，排除不合理的加工路线，进行高效合理的加工，利用正确的加工工艺制造出合格的优质阀门。关键词：阀门 截止阀 性能 工艺 设计DN40 globe valve processing process planning Abstract : The valve as a fluid transmission components, as the national economy, especially the national coal chemical industry and the development of the equipment manufacturing industry, and put forward the new request to the valve, high temperature and high pressure, abrasion resistance, corrosion resistance, resistance to erosion and follow the bad and zero leakage. So, the valve will obtain rapid development. Globe valves are using the globe valve seat disc along the center of the channel, to control the movement of a pipeline open circuit valve. Can be used in the system of medium flow. At present, has been widely used in petrochemical industry, electric power, metallurgy, chemical and urban construction. Based on the development of DN40 cut-off valve, the purpose, structure, features of certain of this, enhance the understanding of the body. According to the analysis of the valve, the production type, type and manufacturing methods, blank processing route, worked out the unreasonable processing route, and the reasonable processing, using the correct processing manufacturing qualified quality valves.Keywords : Performance technology design globe valve valve目 录1引言12.1阀门的分类12.2截止阀的分类42 截止阀的用途和主要性能62.1截止阀的用途62.2截止阀的结构特点62.2.1截止阀的基本结构62.2截止阀的特点72.3截止阀的主要标准72.31截止阀的主要标准72.32截止阀型号编制说明82.4截止阀的主要性能82.5 截止阀的工作原理82.6 截止阀的选用原则93 DN40截止阀阀体分析103.1 阀体的结构特征分析103.2阀体AutoCAD图104 阀体的机械加工工艺规程设计124.1零件加工工艺规程设计124.1.1零件分析124.1.2确定生产类型124.1.3毛坯种类及其制造方法的确定134.2工艺路线的拟定134.2.1定位基准的选择134.2.2制定工艺路线134.2.3选择加工设备及工艺装备154.3切削用量和工时定额的确定154.3.1基本计算公式的引用 154.4各道工序设计164.4.1工序一164.4.2工序二204.4.3工序三214.4.4工序四264.5工艺合理性分析 29总 结谢 辞参考文献附 录 截止阀零件图
